Fastener-inserting machine



May 8, 1934. A. A. LAWSON FASTENER INSERTING MACHINE Filed Sept. 20.1932 6 Sheets-Sheet 1 May 8, 1934. A. A. LAWSON FASTENER INSERTINGMACHINE Filed Sept. 20. 1932 6 Sheets-Sheet 2 a W w m May 8, 1934. A. A.LAWSON- FASTENER INSERTING MACHINE Filed Sept. 20. 1932 6 Sheets-Sheet 3May 8, 1934. A, LAWSON 1,957,463

FASTENER INSERTING MACHINE Filed Sept. 20. 1932 6 Sheets-Sheet 4 WIN? 2%y 1934- A. A. LAWSON FASTENER INSERTING MACHINE Filed Sept. 20. 1932 6Sheets-Sheet 5 m gmm Wvmvmm Wm M fii Qmikm ?e.tenteel May 3, 1934 53 insApplication September 20, 1932, Serial No. 633,973

32 Claims.

This invention relates to fastener-inserting machines of the type inwhich automatic mechanism feeds the work to space successive fastenersof a series one from another. The invention is herein illustrated asembodied in a duplex eyelet-inserting machine, so called because it isprovided with two groups of tools arranged and operated to insert twoeyelet simultaneously, for example, one in each of the quar- 19 ters ofa shoe-upper, but it is to be understood that the invention is notlimited to machines of the duplex type nor to any specific type offastener.

An object of the invention is to provide an improved fastener-insertingmachine in which the work may be fed continuously, instead ofintermittently as heretofore, to space successive fasteners one fromanother, to the end that the conditions of operation may be morefavorable to accurate guiding of the work in consequence of eliminatingjerking thereof.

In former machines provided with work-feeding mechanism in combinationwith mechanism for inserting and clenching the barrels of tubularfasteners such as eyelets, the work remains stationary througha periodof about five-sixths of each cycle, during which the punching mechandthe fastener-inserting mechanism are operated. The remainder of eachcycle is devoted to feeding the work, but is so short that the workcannot be fedwithout a sudden jerk. From an op erators standpoint suchconditions are disagreeable and militate against accurate control in theguidance of the work. Although many operators would like machinescapable of operating at speeds as high as 500 R. P. M., few machines,any, will operate satisfactorily at speeds above see R. P. M. Even whenoperating at a speed of only 3G0 R. P. M. one-sixth of a cycle occupiesonly 1/30 of a second oftime and is not all that could desired forwork-feeding purposes. Nevertheless, when, as in former machines, thepunching of the holes and the inserting and clenching of the fastenersmust be done at other times than while the work is being fed, the periodof time allotted to each operating motion must be limited accordingly,with the result that the punching mechanism and the fastener-insertingmechanism, aswell as the work-feeding mecha- 0 nisin, must be operatedvery suddenly and rapidly.

In recognition of these conditions, another ob-- ject of the presentinvention is to provide an improved fastener-inserting machine in whichgreater proportions ofv each cycle than formerly shall be available forpunching fastener-receiving holes in the work and for inserting andclenching tubular fasteners.

Consistently with the objects above set forth, the machine hereinillustrated comprises workfeeding mechanism constructed and arranged toimpart continuous feeding movement to a workpiece through a series ofconsecutive cycles of operation, automatic means arranged to punch aseries of fastener-receiving holes, one in each cycle, in thework-piece, and automatic means arranged to insert and clench a tubularfastener in each of said holes while the work-piece is being fed by saidmechanism.

The general organization of the machine herein illustrated is similar.to that shown and described in the pending application of S. L. Gookin,Serial No. 469,432, filed July 21, 1930, but the work-feeding mechanismin the present machine is organized to feed the work continuouslythrough any desired number of machine cycles. On the other hand, themachine shown in the above-mentioned Gookin application is provided withmechanism that feeds the work intermittently. with appreciable dwellsbetween the feeding steps. Although, in many respects, the two machinesare fundamentally of the same type, a brief preliminary outline of mypresent work-feeding mechanism will not only aid the detaileddescription that follows, but will also facilitate an understanding ofthe manner in which the elements cooperate.

The machine herein illustrated comprises two cooperatively relatedwork-feeding units arranged in tandem relation with respect to thedirection of feeding movement. These units are reciprocated innon-synchronized relation, that is, each executes a backward strokewhile the other is executing a feeding stroke, but preferably eachbegins its feeding stroke before the feeding stroke of the other isquite finished, to the endthat no interruption shall occur in the travelof the work-piece at any intermediate point in a series of cycles. Oneof the Workfeeding units of the illustrated machine includes a punchingdevice and a fastener-inserting device arranged side by side in acarrier by which they are reciprocated laterally and by which thefastener-inserting device is shifted into register with thefastener-receiving hole made in the work-piece by the punching device.These devices are operated successively dining each feeding stroke ofthe feeding unit of which they. are parts. The fasteners are picked froma raceway by the fastener-inserting device while the latter is movinglaterally, the raceway being stationary at that instant.

The other work-feeding unit of the illustrated machine includes awork-support and a presserfoot that clamp the work-piece with sufiicientpressure to insure feeding the latter, but not sufficient to distort,disarrange or tear the work piece when they move counter to thedirection of feeding movement. These elements correspond, in one sense,to the stationary work-support and the presser-foot of the machine shownin said Gookin application, but because my present invention utilizesthem to impart feeding movement to the work-piece they are instrumentalin rendering the travel of the work continuous. Moreover, the motions ofthe work-feeding units are coordinated to maintain a constant rate oftravel of the work.

The two work-feeding units, as illustrated herein, are operated. by twoindividual trains of mechanism that provide not only for properlynonsynchronized operation but also for regulation of the length of theindividual feeding strokes of each, to the end that the spacing of thefasteners, one from another, may be varied as desired. In addition,these trains of mechanism are so organized that both may be regulatedsimultaneously by an adjustable regulator common to both, with theresult that whenever a change of regulation is made it will affect bothwork-feeding units equally. Consequently, with every adjustment of theregulator, the speed of the work-piece will be constant.

The invention also comprises various other improvements that arehereinafter described and claimed. Such improvements as relate to themechanism for supplying the fasteners form the subject-matter of adivisional application Serial No. 663,786, filed March 31, 1933.

Referring to the drawings,

1 is a left side elevation of a duplex eyelet-inserting machineconstructed in accordance with this invention;

Fig. 2 is a right side elevation on a larger scale of the principaloperating mechanisms, the view being squared relatively to the sheet forconvenience in making the drawing;

Fig. 2a is a side elevation of two individually movable slides theleft-hand one of which carries the punching and fastener-insertingassemblage, and the other of which is an element of the mechanism foroperating the punching devices and the fastener-inserting devices;

Fig. 3 is a frontal and right side perspective view of the mechanismsincluded in Fig. 2;

Fig. 4 is a sectional view in an inclined plane looking down on thework-feeding mechanism and the delivery end of the raceway, the partsoccupying their initial positions;

Fig. 5 is a View similar to Fig. 4 except that some of the parts standin different positions corresponding to that point in the machine cyclewhen eyelets are picked from the raceway;

Figs. 6 to 11, inclusive, are front views of the .work-engaging elementsof the work-feeding mechanism, the views in this series representingsuccessive positions of the parts in the execution of a cycle ofmotions;

Fig. 12 is a sectional view, the plane of which is indicated by the linemil-XII on Fig. 2;

Fig. 12a is a front view of a pin shown in Fig. 12;

Fig. 13 is an elevation, partly in section, of the cam-shaft and clutchassembly;

Fig. 14 is a left side elevation, partly in section,

of a detachable raceway and hopper unit in cooperative relation to aportion of the racewayoperating mechanism;

Fig. 15 is a plan view lookirr down on the articulated or jointedsections of the raceway, the plane of the view being indicated by lineXV-XV on Fig. 14;

Fig. 16 is a sectional view looking down on one of the raceway-latchingdevices intersected by line XVI-XVI on Fig. 14; and

Fig. 17 is a vertical section through the hopper in the plane indicatedby the line XVII--XVII on Fig. 14.

Referring first to Fig. 1, the machine comprises a hollow main frame 20open at the frontand formed with a flat base 21 adapted to stand on abench (not shown). The frame 29 is provided with a stationary horizontalshaft 22 on which two idlers, one represented at 23, are mounted toguide a driving belt 24 to a receiving pulley 25 forming a part of adisconnectible driving clutch, the pulleys 23 and 25 being enclosed inthe frame 20, and the base 21 having an opening through which the beltextends.

As shown in Fig. 13, the frame 20 is provided with bearings 26 in whicha cam-shaft 2'? is journaled, the pulley 25 and the disconnectibleclutch being mounted on the lower end of this shaft. Although anysuitable type of clutch may be used, that illustrated is of the type inwhich the pulley 25 is in continuous rotation but is initiallydisconnected from the cam-shaft and may drive the cam-shaft through oneor more cycles at the will of the operator. Control of the clutch isafforded by a spring-pressed controlling pin 28 (Fig. 1) and a flexibleconnection, such as a chain 29, leading therefrom to a treadle (notshown). The controlling pin 28 also serves to arrest rotation of thecam-shaft at a predetermined point in its cycle following release of thetreadle.

Again referring toFig. 13, the cam-shaft 27 is provided with a pair ofcompanion cams 36 and 31 for shifting the punching devices and thefastener-inserting devices to the front and rear; a pair of companioncams 32 and 33 for operating the punching devices and thefastener-inserting devices alternately; a pair of companion cams 34 and35 for operating one of the two cooperative work-feeding units; a pairof companion earns 36 and 3'7 for operating the other one of thecooperative work-feeding units; and a single cam '38 for operating theraceway. In addition, a worm 39 in the form of a nut is screwed on theupper end of the cam-shaft to operate a train of mechanism by whichbrushes, hereinafter described, are driven to discharge fasteners from asupply hopper.

Referring to Figs. 2, 3, 4, and 5, a rod or shaft 40 is arrangedparallel to the cam-shaft 27, its

upper and lower ends being inserted into sockets a formed in the frame20 and a set-screw 41 being screwed into the lower socket to secure therod rigidly to the frame. This rod serves as a fulcrum for a series ofoperating levers strung thereon as follows: a bell-crank lever 42provided with rollers that engage the cams 3G and 31 respectively; abell-crank lever 43 provided with rollers that engage the cams 32 and 33respectively; a bell-crank lever 44 provided with rollers that engagethe earns 34 and 35 respectively; a

of the lever 46 is maintained in contact with the cam 38 by a spring 145hereinafter described, but the bell-crank levers 42, 43, id, and areeach operated positively in opposite directions by the companion camswith which they cooperate.

In accordance with the requirements of duplex eyelet-inserting machines,the machine herein illustrated is provided with two opposed coaxialveyelets gravitate from a supply hopper. The

punches cooperate with an intermediate punch bed 54 (Fig. i) which maybe an integral area of a tongue 55 or, if preferred, a disk carried bythe tongue and arranged in a socket formed therein. Lik wise, thefastener inserting devices 52 cooperate with an intermediate anvil orclenching element 55 which may be an integral portion of the tongue 55or, if preferred, the disk carried thereby and inserted into a socketformed therein. In either event, the punch-bed 54: remains always inregister with the punches, and the anvil 56 remains always in registerwith the devices 52.

Work-feeding mechanism The punching device so and the fastener-insertingdevices 52 are guided toward and from each other and are shiftedlaterally by a duplex 1 head or carrier 5'? to which the tongue 55 isaf- ,ing devices 50 and the fastener-inserting devices 52 and beingbehind those devices to provide for swinging movement of the head fromside to side to feed the work. The slide 58 is supported and guided bytwo parallel rods 60 the ends of which are arranged in sockets formed inthe frame 20. The slide initially occupies its forward position (Figs. 2and i) to maintain the punching devices in the desired position forpunching, but immediately after the punches have been operated andretracted from the work the slide is shifted to the rear (Fig. 5) toplace the fastener-inserting devices 52 in register with the holes thathave just been formed in the work by the punches. Reciprocation of theslide 58 lengthwise of the rods 60 is derived from the bellcrank lever42 to which it is connected by a link 61.

The other one of the aforesaid work-feeding units comprises a swinginghead 62, a tongue 63 rigidly secured thereto, and a pair ofspringstressed work-clamping jaws 64: between which the tongue extends,one of the jaws 54 being arranged to cooperate with the tongue to clampa quarter of a closed shoe-upper while the other one of the jawscooperates with the tongue to clamp the other one of the quarters. Aworkpiece inserted between the jaws 64 and the intermediate tongue 63 isclamped continuously and without any relaxation of the clampingpressure. The head 62 of this unit is provided with upper and lowerarms, the upper one of which is indicated at 65 in 2, 4, and 5, thelower one being obscured by other structure. These two arms arearranged, respectively, above and below the connection between theswinging head 57 and the slide 58. As shown in Figs. 4 and 5, the upperarm 65 is connected to a supporting stud 66 by a pivot-pin 67. The lowerarm of this head is likewise connected to a supporting studcorresponding to that indicated 66, the two connecting pivots beingcoaxial. The supporting stud 66 and the lower stud corresponding theretoare affixed to the frame 20 through which their shanks 68 extend to beset up tightly by clamping nuts 69.

It is to be observed in 4 that the axis of the pivot-pin 67 is directlybehind the axis of the pivot-pin 59 that connects the swinging head 57to the slide 53, and that the distance between those two axes is exactlyequal to the distance between the axes of the punching devices and thefastener-inserting devices represented by the punch-bed 54 and the anvil56. Consequently, when the slide 58 is shifted to the rear. ashereinbefore explained, to place the fastener-insert ing devices inregister with the punched holes a work-piece the axis of the pivot pin59 will coincide with the axis of the pivot-pins 6'] as represented inFig. 5, to the end that both of the work-feeding units may swing about acommon axis. Before the pivot-pin 59 is placed in coaxial relation tothe pivot-pins 67, the work-piece .erives its feeding motion solely fromthe righthand work-feeding unit to which the pivot-pins 6'7 belong, butafter the pivot-pin 59 has been placed in coaxial relation to thepivot-pins 67 the work derives its feeding motion from the lefthandwork-feedingunit through the medium of the fastener-inserting deviceswhich are operated to insert and clench fasteners immediately prior tothe final stage of feeding movement of the right-hand unit. Statedotherwise, the lefthand unit is instrumental in feeding the work onlywhen its axis of swinging movement coincides with the axis of theright-hand unit. Nevertheless, the two groups of work-engaging elementsof the work feedlng units are moved laterally toward and from each otherin consequ nee of being reciprocated in non-synchronized relation bymechanism now to be described.

Two individual trains of mechanism are provided for operating thework-feeding units respectively, the two trains being, to all intentsand purposes, duplicates except the throws and timing of the cams thatoperate them. Moreover, both trains of mechanism are under control of acommon regulator by which the amplitudes of motion of the two units maybe simultaneously and proportionately altered to vary the distancebetween consecutive fasteners.

The motion for reciprocating the right-hand work-feeding unit comprisingthe work-clamping members 63 and 64 is derived from the bell-crank lever44 (Figs. 2, 3, 4, and 5), while that for reciprocating the lefthandunit comprising the fastener-inserting devices is derived from thebell-crank lever l5. The operating parts that connect the lever 44 andthe swinging head 62 comprise a floating lever 70 and a link '?1, thelevers 44 and 70 being connected by a pivot 72, the lever 70 and thelink 71 being connected by a pivot-pin '23, and the link and th swinginghead 62 being connected by a pivot-pin '74. In like manner, theoperating parts connecting the bellle e 45 and th win in head 7 p i afloating lever 75 and. a link 76 (Figs. 2 and 3), duplicates of thelever and the link 71, the pivot-pin 77 connecting the link 78 and thehead 57 being clearly shown in Figs. 3 and 4. The floating lever of thistrain is omitted from Figs. 4 and 5 to avoid confusion, but itsarrangement is shown in Figs. 2 and 3 and its pivotal connections areduplicates of those provided for the corresponding lever 70.

To provide for regulating the feeding motions of the swinging heads 62and =7, the floating levers 7G and 75 are arranged to extend throughhollow guiding links 78 and 79 respectively, the intermediate portionsof the levers being connected to the links by individual pivot-pins, oneof which is clearly shown in Fig. l and indicated at 80. Thesepivot-pins and the holiow links 78 and 79 by which they are carried aremovable in operation about coaxial pins 81 that connect the hollow linksto a hollow support and guide 82 that constitutes an adjustablefeed-regulator. Under normal operating conditions, the feed-regulator 82and the pivot-pins 81 remain stationary while the links 78 and 79 swingback and forth through an arc of variable limits indicated in Fig. i bydot-and-dash lines, a and 2). These variable limits are determined bythe position of the regulator 82.

The regilatcr 82 is connected to the stationary frame 28 by trunnions 88which constitute a flfifi anchoring pivot, the axis of which is parallelto the axes of the floating pivots and so located that at anintermediate point each cycle these axes all coincide as represented inFig. 5. Therefore, although both limits of movement of the work-feedingunits are variable to regulate the amplitude of travel of the work, thisaxial coincidence of the floating pivots 80 with the stationary pivots83 occurs, under all conditions of regulation, at a constant focal pointin every cycle. Moreover, the operation of the fastenerin erting devices52 is so timed as to cause the tips or" the spindles 53 to enter theeyelets at the delivery end of the raceway exactly at this focal point.The significance of this coordination is it insures register of thespindles with the eyelets about to be picked thereby, irrespective ofchanges of adjustment of the feed-re ulator 82.

The feed-regulator 82 provided with an arm 84 arranged to swing fromside to side over a fixed gage-plate 85 in which a series of holes 86are formed to receive two stop-pins 87, the pins being locatedrespectively at the right and at the left of the arm. The arm isnormally maintained against the right-hand pin 87 by a tension spring88, one end of which is attached to the regulator and the other end to afixture 89. When the pins 87 are apart to permit movement of theregulator, the latter may be shifted against the force or" spring 88 bya treadle (not shown) to which the arm 84 is connected by suitablemeans, such as a chain 90 (Figs. 1 and 3), relatively slow feedingmovement of the work being the result of leaving the arm 84 against therighthand pin 87 and relatively rapid feeding movement being the resultof swinging the arm toward the left-hand pin. The pins are thuseffective to establish two predetermined rates of feeding movement, bothof w ich may be obtained alternately while the machine is running, asfor example when it is desired to insert a predetermined number offasteners of a series a relatively short distance apart and one or moresubsequent fasteners of the series a greater distance apart.

To provide for increments of regulation finer Lea-li ies than thoseafforded by the spacing of the holes 86, the arm 84 is provided with aneccentric cam 91 the periphery of which is arranged to abut against thepins 87. This cam is formed on or affixed to a spindle journaled in thearm 84, the upper end of the spindle being provided with a knob such asa knurled sleeve 92 by which the cam may be turned manually. Aleaf-spring 93 secured to the arm 84 cooperates with a notched collar 94to prevent accidental turning of the cam, the collar being affixeol tothe spindle to turn with the cam. The spring 93 is adapted to yield andto click over the teeth of the collar when the spindle is turnedmanually. The range of adjustment afiorded by the cam 91 is about equalto the distance between the centers of the holes 86.

In the operation of the work-feeding mechanism, the pivot 72 connectingthe levers 44 and 70 has an invariable length of reciprocatory inotion,but the pivot 73 connecting the lever 70 and the link 71 has a variablelength of motion according to the position of the regulator 82. The sameis true also of the corresponding pivots of the lever 75. Although thelevers 70 and 75 float with the hollow links 78 and 79, the actualfulcrum thereof is the pin or pins 81. Consequently, when this fulcrumis adjusted toward the rear ends of the lovers 78 and 75 the forwardends of these levers receive greater motions from their operating cams,and vice versa.

Woricfeeding cycle The manner of cooperation of the two workfeedingunits is pictured in Figs. 6 to 11 inclusive, these figures representingsuccessive stages in a cycle of operation. To save space on th drawings,only the upper punch 51 and the upper faste' er-inserting device 52 arerepresented, but it is to be understood that in machines of the duplextype the corresponding lower punch and fastener-inserting device willstand below the tongue 55 and will operate against the lower surfacethereof. Moreover, these figures include only the upper work-clampingmember 6% of the right-hand work-feeding unit, the corresponding lowerwork-clamping member as being omitted for the reason above pointed out.

The initial positions of the parts are represented in Fig. 6 in whichthe right-hand limit or lateral movement of the punch 51 is representeda vertical dot-and-dash line 100. This line is extended through Figures7 to 11 and may be regarded as a constant for purposes of comparison ofthe various positions represented in this group of figures. The element181 in these figures represents a work-piece, such as the lefthandquarter of a shoe-upper. In duplex work, the riglf-hand quarter of anupper would tmderlie the tongue 55 and the intermediate clamping member63 and would be clamped against the latter by the lower clamping member64. The description will proceed with regard to the operationspertaining to the element 191 which may be the left-hand quarter of anupper, and will sufiice to explain how the operations are performed onduplex work.

As hereinbefore stated, the clamping members 63 and 64 maintaincontinuous clamping pressure upon a work-piece interposed between them,this clamping pressure being sumcient to feed the work-piece but notbeing sufficient to prevent the work-piece from being fed relatively tothem by the lef-hand work-feeding unit. At the beginning of each cycle,the parts being in the positions represented in Figs. 4 and 6, therighthand work-feeding unit, of which the intermediate clamping member63 is a part, is at an intermediate point in its work-feeding strokefrom right to le Moreover, at this point the lefthand work "ceding unitstands in its forward position (Fig. i), the punch 51 being in registerwith the area of the work-piece that is about to be perforated toprovide a fastener-receiving hole 99.

Proceeding with the cycle, both work-feeding units move from right toleft, the work now being fed solely by the right-hand unit. Meanwhile,the punch 51 is operated to punch a hole 99 in the work-piece in processof being fed, this operation being represented in 7. The punch 51 isretracted immediately after completing its punchin stroke, and duringsuch retraction the left-hand work-feeding unit is shifted to the rearto place the fastener-inserting device 52 in register with the hole 99just punched. Referring to Fig. for the moment, the pivot 59 of theleft-hand work-feeding unit now stands in coaxial relation to the pivot.57 of the right-hand work-feeding unit with the result that bothfeeding units swing about a common axis. At the instant when these twopivots are brought into coaxial relation, the eyelet 102 at the deliveryend of the raceway stands in register with the punched hole 99 and thespindle 53, the fastenerinserting device being immediately moved towardthe work-piece to thrust its spindle into the eyelet as represented inFig. 8. The insertion of the tip of the spindle 53 into the eyelet 102ccurs while both work-feeding units are moving from right to left, thedelivery end of the raceway being stationary at that instant, althoughnot included in the figure.

The movement of the fastener-inserting device toward the work notinterrupted but continues until the eyelet on the spindle 53 has beeninserted into the work-piece and clenched as represented in Fig. 9. Upto this point in the cycle, the workpiece has received all its feedingmotion from the right-hand feeding unit, although the left-hand feedingunit has also been moving from right to left. Now, the eyelet havingbeen inserted and clenched, the work-piece is under positive control ofthe left-hand work-feeding unit, the clenched eyelet being gripped bythe fastenerinserting device 52 the anvil 55. At this point in thecycle, the right-hand work-feeding unit is at the left-hand limit of itsfeeding motion and is immediately moved .in the reverse direction whilethe oft-hand unit continues to feed the workpiece to the left. In movingfrom left to right, the clamping members 63 and 64 slip or sliderelatively to the work-piece without afiecting the feeding movementthereof, but they never heless tension the work-piece sufiicientlv toeli vinate wrinkles and wavy portions and thereby accurate spacing ofsuccessive fasteuers one from another.

t about the instant when the right-hand Workceding 1 it reaches theright-hand limit of its .motio (Fig. the retraction of the lsertingdevice 52 begins, but the left- Nevertheless, during the final feedingmotion the spindle 53 reclenched eyelet, and the right-hand 7'- beginsits feeding stroke from it, whereby it is moved to the position *d inFig. ll. The fastener-inserting device, having now fully released thework-piece, which is once more under control of and being fed by theright-hand unit, returns to its initial position represented in Figs. 4and 6, the cycle being thus completed. It is to be observed that thereare two brief periods in each cycle during which both feeding unitsimpart feeding motion to the work-piece, viz., during the final stage ofthe feeding stroke of the right-hand unit when the parts are in therelation represented in Fig. 9, and during the latter stage of thefeeding stroke of the left-hand unit when the parts are in the relationrepresented in Fig. 10, each of the feeding units taking control of thework-piece before the other unit relinquishes its control or quitefinishes its feeding stroke. The work-piece is thus caused to progresscontinuously so long as the machine is in operation, and its rate oftravel is constant so long as the feed regulator 82 remains in oneposition.

Operation of punching devices and fastenerinsertz'ng devices Referringto Figs. 1, 2, and 3, the punching devices and the fastener-insertingdevices 52 are operated alternately by two strikers 102 with which theyare registered alternately by the reciprocatory motions imparted to theslide 58 (Figs. 4 and 5) as hereinbefore described. Inasmuch as themechanism for operating the strikers 102 is virtually the same as thecorresponding mechanism fully illustrated and described in the aforesaidapplication Serial No. 469,432, a brief description thereof will sufficefor present purposes. These strikers are afiixed to the forward ends oflevers 103 mounted on fulcrum pins 104 inserted into sockets in theframe 20. The rear ends of the levers 103 are operated by a duplexdouble-acting toggle mechanism (Fig. 1) comprising a slide 105 andtoggle-links 106, each of the links being connected to the slide by apivot-pin 107 and to one of the levers 103 by a pivot-pin 108. The slide105 is arranged on and guided by the two parallel guide-rodshereinbefore described, being arranged behind the slide 58. Motion forreciprocating the slide 105 is furnished by the companion cams 32 and 33(Fig. 13) and is communicated to the slide by the bell-crank lever 43and a link 4'7. The slide 105 stands initially in its forward positionas represented in Fig. 1, its travel to the rear being sufficient notonly to operate the punches but also to retract the strikers 102 farenough to clear the outer ends of the fastener-inserting devices 52. Thesubsequent movement of the slide 58 to the rear places thefastener-inserting devices 52 in register with the strikers 102. Theforward travel of the slide 105 is interrupted at an intermediate pointto arrest the pivots 107 at or near their deadcenter positioncorresponding to the conditions represented in Fig. 9, the strikers 102remaining stationary and thereby maintaining the fastenerinsertingdevices against the clenched eyelets during nearly all the remainder ofthe work-feeding stroke of the swinging head 57. As shown in Fig. 3 thestrikers 102 are extended laterally to maintain contact with thefastener-inserting devices throughout their range of work-feedingmovement. When such movement is nearly completed (see Fig. 10) the slide105 resumes its return to its initial position thereby retracting thestrikers 102.

Since the strikers 102 are not effective to retract the punching devicesor the fastenerinserting devices, the illustrated machine is providedwith two-armed torsion-springs for that purpose. It has heretofore beenthe practice in the manufacture of duplex fastener-inserting machines toprovide levers in addition to springs for retracting these devices, afeature of construction that requires small detachable parts to mountthe levers or to retain them on their support. On the other hand, thetwo-armed torsion springs herein illustrated not only do away with allsuch levers and small detachable parts, but they also eifect aconsiderable reduction of the load carried by the reciprocatory head 57,as well as a considerable saving in the cost of construction. Moreover,the procedure incidental to exchanging punching devices andfastener-inserting devices for others is thereby simplified andfacilitated.

Asshown in Fig. 12, the punching device 56 is provided with adiametrically extending socket into which the extremity of one arm of alength of spring-wire is inserted, the bearing for the punching devicebeing provided with a slot 111 in which this arm may play up and down.

, The other arm 112 of the wire engages and is deflected by an abutmentconsisting of a pin 113 projecting from and tightly pressed into a web114 forming a part of the swinging head 57. The intermediate portion 115of the wire is coiled to provide one or more convolutions constituting atorsion spring. The coiled portion surrounds and is supported by a boss115 formed on and projecting from the web 114. The construction is suchthat this spring device may be attached by first inserting the extremityof the arm 110 into the punching device, then sliding the coiled portion115 over the boss 116, and finally deflecting the arm 112SLllTlClBl'ltlY to engage it with the pin 113. When the spring device isthus attached, the

, coiled portion 115 is maintained on the boss 116 r by a shoulder 117formed on the pin 113.

A similar spring device differing merely in shape but also comprisingtwo arms and an intermediate coiled portion 115, is bent to provide alaterally extending finger 118 at its forward end, the rear arm thereofbeing engaged and deflected by the pin 113 which is preferably providedwith a shoulder 109 near its left-hand extremity to constrain the arm.See Fig. 12a. This shoulder prevents lateral displacement of the springdevice and thereby maintains the coiled portion 115 on the left-handboss 116. The finger 118 is arranged to extend through a slot 119 in thehead 57 and normally projects into a socket bored for its reception inthe fastener-inserting device 52. The

flexibility of this spring device, afforded by the coiled portion 115,provides for withdrawing the finger 118 from the device 52 whenever itis desired to remove that device from its bearing, the parts beingnormally maintained in their cooperative relations by the shoulder 109on the pin 113.

A lug 120 formedon the head 57 is arranged to arrest the retractorymovement of the finger 118 and the device 52.

Fastener-supplying means 123, the two divisions being affixedrespectively to the upper surface and the lower surface of an interposedblock 124. Moreover, the raceway is divided at an intermediate point ofits length to provide a stationary upper section and a movable lowersection, the latter being indicated as a whole: by the numeral 125. Apivot-pin 126 connects the two sections of the raceway to form anarticulated joint, the lower end of the block 124 and the upper end ofthe section 125 being mortised one into the other to form the jointthrough which.

the pivot-pin extends. All these elements, includ-- ing the entireraceway structure and the hopper 121 constitute a detachable unit toprovide for a rapid exchange of similarly constructed units whenever itis desired to insert fasteners of a different color or size or someother different characteristic.

The fastener-supplying unit is supported in 00- operative relation tothe fastener-inserting mechanism by two parallel horizontal studs 127afiixed to and projecting from thelef't-hand side of the frame 20. Theconstruction of one of these studs is shown best in Fig. 16. The bodyportions of the studs 127 are cylindrical and the raceway block 124 isprovided with cylindrical sockets 123 to receive them. The studs projectbeyond the block when the latter is mounted thereon, the left-hand endsof the studs being cut away on one side to provide clearance forlatching devices 129. These devices are in the form of segments of thestuds and are provided with hollow shanks or stems 130 arranged to slidein radially extending sockets formed in the studs. Each hol low stem 130encloses a compression spring 131 by which the latching device 129 isnormally projected beyond the periphery of the stud and therebymaintained in latching position. The shanks 130 are retained in theirsockets by screws 132 screwed into the ends of the studs, the inner endsof the screws projecting into slots 133 formed in the stems. Eachlatching device 129 is provided with a pin 134 by which it is preventedfrom turning, the studs 127 being provided with diametrically extendingbores 135 in which the pins 134 may slide.

The construction is such that when the latching devices 129 areprojected outwardly by the springs 131 they will not pass through thesockets 128 formed in the block 124, but a pressure of a thumb or fingeragainst each of the latching devices is sufficient to force them intoflush relation with the studs. The latching devices will then passthrough the sockets 123 and thus permit attaching and detaching thefastener-supplying unit. Preferably, the block 124 and the latchingdevices 129 are provided with inclined contacting surfaces 136 arrangedto cooperate with a wedging or camming effect to maintain the right-handsurface of the block seated against the frame 20,

the springs 131 being thus utilized not only to prevent accidentaldetachment of the raceway unit but also to take up all encl-playlengthwise of the supporting studs 127. The left-hand extremities of thestuds 127 and of the latching devices 129 are preferably tapered asindicated at Special manipulation of these devices is a tongue 14.0(Figs. 1, 5 and 14) formed and ar ranged to slide into a groove 1 11 asthe raceway unit slides along the supporting studs 127, this groovebeing formed in the upper end of a rockshaft 142 by which the section isoperated. The rock-shaft 1&2 is journaled in a boss 143 formed on theframe 23 and is provided with an arm 1 1 1 by which it may be operated.The arm may be pinned or otherwise affixed to the rock:- shaft. Atorsion-spring 145 coiled about the rock-shaft normally maintains thedelivery end of the raceway in fastenenpresenting position asrepresented in Fig. 5, the lower extremity of the spring being hookedinto a socket in a collar 146 and the upper end being arranged to bearagainst the frame 26. ihe collar 146 is secured to the rock-shaft 142 byset-screws 1%! and may be adjusted rotatively to put the spring iderinitial eflection. Retractory movement of he delivery end of the racewayis derived from the cam 38 (Fig. 13) and the cam lever as (Figs. 2, 3,a, and 5). This motion is communicated from the lever to the arm i s-lby a link 148.

The hopper 121 is provided -with two oppositely inclined bottom Walls150 on which eyelets that stand flange down may slide in process ofbeing emitted through outlet ports 151 to the divisions 122 and 23,respectively, of the raceway. Enlission of the eyelets is effected byrotary brushes, one of which is indicated at 152 in Fig. 14. Thesebrushes are aiiixed to shafts 153 that extend through the Walls 150 andare provided with eccentric lugs 15% by which they may be rotated.

The machine is also provided with improved brush-operating mechanismthat requires no connecting, disco n cting, or other manipulation toestablish driving connections, other than 111011115 ing afastener-supplying unit on the two so.-- porting studs 127, For thispurpose, tivo pulleys 155 mounted to lie under the walls 15%respectively, the left-hand pulley in Fig. 1 being to a shaft 156 andthe shaft being jour naled in a bracket 15? affixed to the frame 29. rigt-hand pulley in Fig. l is to a shaft 158 iournaled a bearing 159 in theframe so. The axes of the pulleys 155 are oppositely inclined and solocated as to register respectively the axes of the two brushes 152.Each pulley is provided with an eccentric lug 16o arto engage and driveone of the lugs 154. Rotation of the front pulley is communicated to therear pulley by a belt 151 that runs under idler rolls 162, one of whichappears in Fig. l, the other roll being concealed by the interveningbracket 157.

Rotation for driving the pulleys 155 is derive-J from the worm 39 on theupper end of the ca .shaft (Figs. 2, and 13) and is communicat from theWorm to a worm-Wheel 168, thence a shaft 15ato a spur-gear 165, andfinally to he shaft 158 by spur-gear 185 aiiixed to the latter.

he hopper 121 may or may not be provided with a superposed section 17cdesigned *0 increase its capacity. If the section is used it mayattached to the hopper by a hinge-pin 1.71 (Fi s. 3 and 17), the hopperbeing provide with cars 1722 and the section 17% being provided withcornplemental ears 1'13 through which the hinge-pin may inserted. Aspring latch 1% secured to the opposite side of the hopper is arrangedto snap over a flange 1'? 5 projecting from the of the section 170 tomaintain the base firmly seated upon the rim of the hopper. Thespring-latch permits the section to be raised and swung through whichabout the hinge-pin 171to afford access to the near upper edge which alid or cover 188 may be attached the cover having 0 inpleinental cars 28which this may A sp ing-latch 179 to the opposite side of the sectionformed and arranged to over the edge 0 cover 18% an ereby the seated onedge of the se latch per e co sgive access to the sec" ion 17.. 11 theopera conditions do not regime a capacity for fas eners greater thanthat ailorded lay the hopper 121 alone, the detachable section 110 maybe omitted, and the cover 180 1 t in per 121 between the brushes theWall being to support the greater part of mass of fasteners remaining inthe section so that they will not cause congestion of fasteners lyingadjacent to the outlet ports and the brushes.

Having thus described my invention, What 1 claim as new and desire tosecure by Letters Patent of the United States is:

be attached directly to the ears by inserting one 0 m to of the 176 toLikewise, when the cover 18?;

t ex ctly the same manner as with the flange 115 tion 176 is made ofperforated sheet metal or over, the upper section 170 is preferablyprofasteners may drop into the hopthe hing -pins throu h ears thus bros.cooperative relatio the location of the 17.2 correspo.

1'73 and the cover 189 interc langeable for attachm nt directly to thehopper 1 1 is attached directly to the hop er 121 t'-e springlatch 17 1will coopera e directly with of the section 1'75.

Preferably, the upright Wall of the upper secother foraininous to affordobservation of the contents without opening the cover. Morevided with adepressed or dished bottom wall 181 provided with a restrictive centralopening 182 152, the function of the the 15 l. A fFtenerAnsertin ltd-"'-comprising work-feed mechanism and arranged to impart continuous feedingmovement to a work-piece through a series of cones utive cycles ofoperation, automatic means arranged to punch a series offastener-receiving holes, one 1 in each cycle, in the work-piece,automatic means arranged to insert and clenoh a tubular astener in eachof said holes while the work piece is being fed by said mechanism.

2. A fastener serting machine comprising a fastener-inserting device andanother device arranged to engage a Work-piece at separate points,automatic m chanism for operating said devices in non-synchronizedrelation to impart continuous feeding movement to the work-piece througha series oi cycles of operation, ineans ranged to present fasteners tosaid fastener-inserting device, and mechanism for operating saidfastener-inserting device to insert fasteners, one in each cycle ofoperation.

3. A fastener-inserting machine comprising a .ice constructed arrangedto insert and clench tubular i a Work-clamp device, automatic mechannrnarranged to operate said devices in non-synchronized relation to impartcontinuous feeding movement to a Work-piece a series of cycles ofoperation, means arto punch fastener-receiving holes in the work-piece,means arranged to present tubular fasteners to the first-named device,and means arranged to operate the'nrst-named device to insert andclenclf fasteners, one in each cycle of operation.

4. A fastener-inserting mac fine comprising a device constructed andarranged to insert and clench tubular fasteners, a punching device, acarrier in which said devices are arranged side by side, a racewayarranged to present tubular fasteners to the first-named device,mechanism arranged to operate said devices alternately, a work-clampingdevice, and automatic mechanism arranged to operate said work-clampingdevice and said carrier in non-synchronized relation to impartcontinuous feeding movement to a workpiece througha series of cycles ofoperation.

5. A fastener-inserting machine comprising a punching device and adevice constructed and arranged to insert aitubular fastener, means bywhich said devices are shifted laterally to and fro to place themalternately in register with a common area of a work-piece, meansarranged to present tubular fasteners to said fastener-insorting device,automatic mechanism arranged to feed a work-piece, and automaticmechanism arranged to operate said devices successively while saidwork-feeding mechanism is imparting feeding movement to the work-piece.

6. A fastener-inserting machine'comprising a fastener-insertingitoolprovided with a central spindle adapted to enter an annular fastener,means arranged to present annular fasteners successively to saidspindle, automatic mechanism arranged to reciprocate said tool laterallyto feed a work-piece, and automatic mechanism by which said spindle isthrust into a presented fastener while said tool ismoving laterally.

7. A fastener-inserting machine comprising a fastener-inserting toolprovided with a central spindle adapted to enter an annular fastener,means arranged to present annular fasteners successively to saidspindle, automatic mechanism by which a work-piece is fed, and automaticmechanism by which said tool is operated to pick 2a fastener from saidpresenting means and insert the fastener into the work-piece while saidfeeding mechanism is imparting feeding movement to the work-piece.

8. A fastener-inserting machine comprising a device for insertingtubular fasteners, means for presenting tubular fasteners thereto, acarrier by which said fastener-inserting device is reciprccatedlaterally past said fastener-presenting means, automatic machanismlforoperating said device to detach a fastener from said fastenerprese ntingmeans and insert the fastener into the work, and automatic mechanismarranged to operate said carrier to feed the work with a stroke begunbefore and ended after the fastener is detached from thefastener-presenting means. 7

9. A fastener-inserting machine comprising cooperative members arrangedto clamp a workpiece of sheet-material such as a shoe-upper, cooperativemembers constructed and arranged to insert and clench tubular fastenerssuch as eyelets, automatic mechanism arran ed to cause cooperation ofsaid fastener-inserting members, automatic mechanism arranged toreciprocate said fastener-inserting members laterally while engaging aclenched fastener and thereby to feed the work-piece relatively to saidwork-clamping members, and automatic mechanism arranged to reciprocatesaid work-clamping members laterally to feed the work-piece relativelyto said fastener-inserting members.

10. A fastener-inserting machine comprising a punching device, a devicefor inserting tubular fasteners, a carrier in which said deviizes arearranged side by side and by which they are reciprocated laterally,"automatic mechanism arranged to operate said carrier to feed the work,automatic mechanism arranged to operate both of said devicessuccessively during a stroke of said carrier, and means arranged topresent a fastenor to said fastenel inserting device during said strokeof the carrier;

11. A fastener-inserting machine comprising a raceway for presentingtubular fasteners, a reciprocatory carrier movable relatively to, saidraceway, a punching device and fastener-inserting device arranged sideby side in said carrier, automatic mechanism arranged to reciprocatesaid carr'er to feed the work, and automatic mechanism arranged tooperate both of said devices successively during astrolre of saidcarrier, the fastener-inserting device being constructed and arranged todetach a tubular fastener from the raceway during said stroke of thecarrier.

12. A fastener-inserting machine comprising a raceway for presentingtuhular fasteners, two reciprocatory work-feeding units both movablerelatively to said raceway, one of said units including a punchingdevice and a fastener-inserting device arranged side by side, automaticmechanism arranged to operate said units in non-synchronous relation toeffect continuous feeding of the work, and automatic mechanism arrangedto operate both of said devices successively during asingle feedingstroke of the unit of which they are parts.

13. A fastener-inserting machine comprising two reciprocatorywork-feeding units, two trains of regulatable mechanism arranged tooperate them in non-synchronized relation so that each will feed awork-piece while the other is moving in the opposite direction,controlling means com mon to both of said trains for simultaneouslyregulating the amplitude of their respective workfeeding motions, meanscarried by one of said units for inserting and clenching tubularfasteners, and echanism for operating said fastenerinserting means. I

14. A fastener-inserting machine comprising two trains of reciprocatorywork-feeding mechanism arranged to operate in non-synchronized relationto e'fiect continuous feeding movement of a'work-piece throughout one ormore cycles of operation, controlling means common to both of saidtrains for simultaneously regulating their respective amplitudes offeeding motion, means carried by one of said Work-feeding trains forinserting and clenching tubular fasteners, mechanism for operating saidfastener-inserting means once in each cycle, and means arranged tosupply tubular fasteners to said fastener-inserting means.

15. A fastener-inserting machine comprising a reciprocatory work-feedingmechanism provided with fastener-inserting means, a raceway arranged topresent fasteners to said means, and mechanism arranged to operate saidmeans while said mechanism is moving in the direction of itsvorlefeeding movement to detach a fastener from the raceway and toinsert and clench the fastener in a work-piece.

16. A fastener-inserting machine comprising two automatic work-feedingmechanisms operative in ncnsynchronized relation to impart continuousfeeding movement to a worlcpiece, punching means and fastener-insertingmeans carried by one of said mechanisms, a raceway arranged to presentfasteners to said fastener-inserting. means, and automatic mechanismarranged to operate said punching means and said fastener-insertingmeans successively while they are moving in the direction ofwork-feeding movement.

17. A fastener-inserting machine comprising a reciprocatory work-feedingmember, fastener-inserting means carried thereby, a raceway, .withrespect to which said work-feeding member is movable, arrangedto'present fasteners to said means at an intermediate point in the rangeof reciprocation of said member, automatic mechanism arranged to.operate said work-feeding member, and automatic mechanism arranged tooperate said fastener-inserting means while said work-feeding member isin motion.

18. A fastener-inserting machine comprising a punching device and afastener-inserting device, a carrier in which said devices are arrangedside by side, automatic mechanism by which said carrier is shifted toplace said devices alternately in register with a common area of awork-piece, a raceway arranged to present tubular fasteners to saidfastener-inserting device, mechanism for operating said devicesalternately to punch holes in a work-piece and to insert tubularfasteners into the holes, automatic mechanism by which said carrier ismoved to feed the Work-piece while the latter is engaged by one of saiddevices, and auxiliary work-feeding mechanism arranged to operate whileboth of said devices are disengaged from the work-piece.

19. A fastener-inserting machine comprising a punching device and afastener-inserting device,

two cooperatively related reciprocatory workfeeding units, tworegulatable trains of automatic mechanism for operating them innonsynchronized relation to impart continuous feeding movement ofvariable length to a work-piece, adjustable means common to both of saidtrains of mechanism for simultaneously regulating the length of thestrokes imparted to said units by said trains of mechanism, one of saidunits including a punching device and a fastener-inserting devicearranged side by side, automatic mechanism arranged to operate saiddevices successively during a single feeding stroke of the unit of whichthey are parts, and means arranged to present fasteners successively tosaid fastenerinserting device.

21. A fastener-inserting machine comprising two cooperatively relatedreciprocatory workfeeding units one of which includes a device forinserting tubular fasteners, two trains of automatic mechanism arrangedto operate said units in non-synchronized relation, a raceway arrangedto present tubular fasteners successively to said device at anintermediate point in its strokes in -;the work-feeding direction, andmechanism arrangedto operate said device as it passes said intermediatepoint.

22. A fastener-inserting machine comprising two cooperatively relatedreciprocatory workfeeding units one of which includes a device forinserting individual fasteners into a work-piece of sheet material andfor feeding the work-piece by its engagement with the insertedfasteners, two trains of automatic mechanism arranged to operate saidunits in non-synchronized relation, the other one ofsaid units beingconstructed and arranged to tension the work-piece while the latter isbeing fed by the unit first specified, means arranged to presentfasteners to said fastenerinserting device; and mechanism arranged tooperate said device to insert fasteners presented by said means.

23. A fastener-inserting machine comprising two cooperatively relatedwork-feeding units arranged to swing to and fro about a common axis tofeed a work-piece, mechanism arranged to operate said units innon-synchronized relation, one of said units includingfastener-inserting means, means arranged to present fasteners to saidfastener-inserting means, and mechanism arranged to operate saidfastener-inserting means.

24. A fastener-inserting machine comprising two cooperatively relatedwork-feeding units arranged to swing to and fro about a common axis tofeed a work-piece, mechanism arranged to operate said units innon-synchronized relation, one of said units including a punching deviceand a fastener-inserting device arranged side by side, mechanismarranged to shift said devices laterally to place them alternately inregister with a common areaof the work-piece, means arranged to presentfasteners successively to said fastener-inserting device, and mechanismarranged to operate said devices alternately.

25. A fastener-inserting machine comprising two carriers arranged toswing about a common axis, one of said carriers being provided with afastener-inserting device and the other with resilient work-clampingmeans, means arranged to present fasteners to said fastener-insertingdevice, mechanism arranged to operate said device, and mechanismarranged to swing said carriers about said axis in non-synchronizedrelation to cause first one and then the other to feed a workpiece.

26. A machine for inserting eyelets comprising an eyelet-setting too-l,a punch, a carrier in which the setting tool and the punch are mountedside by side, a raceway arranged to present eyelets to the setting tool,cams arranged to operate the punch and the setting tool alternately, aworkclamp, and cams arranged to move said workclamp and said carrier innon-synchronized relation to give continuous feeding movement to awork-piece through a series of cycles of operation of the machine.

2'7. A fastener-inserting machine having a fastener-inserting toolprovided with a central spindle adapted to enter an annular fastener,

a raceway arranged to present annular fasteners successively to saidspindle, cam-operated mechanism arranged to reciprocate thefastener-inserting tool laterally to feed a work-piece, and cam-operatedmechanism arranged to thrust said spindle into a fastener presented bythe raceway while said tool is moving laterally.

28. A fastener-inserting machine comprising a raceway for presentingtubular fasteners, a reciprocatory carrier movable relatively to saidraceway, a punch and a fastener-inserting tool arranged side by side insaid carr er, mechanism arranged to reciprocate said carrier to feed thework, and mechanism arranged to operate the punch and thefastener-inserting tool successively both during the same stroke of saidcarrier thereby causing the fastener-inserting tool to detacha tubularfastener from the raceway and to present it in a hole previously formedby the punch in the work-piece.

29. A duplex eyelet-inserting machine comprising two cooperativelyrelated reciprocatory workfceding units, two trains of automaticmechanism for operating them in non-synchronized relation to impartcontinuous feeding movement to the work, one of said units including apair of opposed punching devices and a pair of opposed eyelet-insertingdevices arranged side by side, mechanism including a pair of opposedstrikers by which said punching devices and said eyeletinserting devicesare operated alternately, and a raceway by which eyelets are presentedto said fastener-inserting devices.

30. In a fastener-inserting machine of the type in which regulatablework-feeding mechanism is regulated by an adjustable member arranged toplay over a gage-plate having a series of holes for the reception of astop-pin, a cam carried by said adjustable member and arranged to abutagainst said pin, and means by which said cam may be adjusted relativelyto said member.

31. In a fastener-inserting machine of the type in which a punchingplunger and a fastenerinserting plunger are arranged side by side toslide in a guiding member, a two-armed torsion spring the arms of whichare connected by a resilient coiled portion, said guiding member havinga spring-supporting boss on which said coiled portion is arranged andalso having an abutment by which one of said arms is deflected tomaintain a retractory force against one of said plungers, said one ofsaid plungers having a socket into which the other one of said armsprojects, and said abutment having a shoulder by which the arm firstspecified is constrained to maintain said coiled portion on said boss.

32. In a fastener-inserting machine of the type in which a punchingplunger and a fastener-in serting plunger are arranged side by side toslide in a guiding member, a twoarmed torsion-spring the arms of whichare connected by a resilient AXEL ARNOLD LAWSON.

